Jump to main content
Jump to site search

Issue 4, 2004
Previous Article Next Article

The influence of the boat-to-chair conversion on the demetallation of the nickel(ii) complex of an open-chain tetramine containing a piperazine fragment

Author affiliations

Abstract

The nickel(II) complex with an open chain tetramine containing a piperazine fragment (1) displays an unusual resistance to demetallation in acidic solution and exhibits a lifetime of about five minutes in a solution 0.1 M in HClO4 and 7.0 M in NaClO4. Sluggishness with respect to the demetallation is ascribed to the occurrence of the boat-to-chair conformational conversion of the piperazine fragment, which implies the passage through the highly energetic half-boat transition state. The use of a high concentration of the inert electrolyte induces a ‘salting out’ effect on both thermodynamics (stability of metal complexes is enhanced) and kinetics (resistance to demetallation is increased).

Graphical abstract: The influence of the boat-to-chair conversion on the demetallation of the nickel(ii) complex of an open-chain tetramine containing a piperazine fragment

Back to tab navigation

Supplementary files

Article information


Submitted
16 Oct 2003
Accepted
10 Dec 2003
First published
21 Jan 2004

Dalton Trans., 2004, 653-658
Article type
Paper

The influence of the boat-to-chair conversion on the demetallation of the nickel(II) complex of an open-chain tetramine containing a piperazine fragment

M. Boiocchi, M. Bonizzoni, L. Fabbrizzi, F. Foti, M. Licchelli, A. Taglietti and M. Zema, Dalton Trans., 2004, 653
DOI: 10.1039/B312980B

Social activity

Search articles by author

Spotlight

Advertisements